\begin{tabular}{l*{12}{D{.}{.}{-1}}}
                &\multicolumn{3}{c}{Ageism Explicit}                     &\multicolumn{3}{c}{Ageism Thermometer}                  &\multicolumn{3}{c}{Ageism Index}                        &\multicolumn{3}{c}{Ageism IAT Score}                    \\\cmidrule(lr){2-4}\cmidrule(lr){5-7}\cmidrule(lr){8-10}\cmidrule(lr){11-13}
                &\multicolumn{1}{c}{(1)}         &\multicolumn{1}{c}{(2)}         &\multicolumn{1}{c}{(3)}         &\multicolumn{1}{c}{(4)}         &\multicolumn{1}{c}{(5)}         &\multicolumn{1}{c}{(6)}         &\multicolumn{1}{c}{(7)}         &\multicolumn{1}{c}{(8)}         &\multicolumn{1}{c}{(9)}         &\multicolumn{1}{c}{(10)}         &\multicolumn{1}{c}{(11)}         &\multicolumn{1}{c}{(12)}         \\
\midrule
Generational Grievances Index&    0.332\sym{***}&                  &    0.305\sym{***}&    0.214\sym{***}&                  &    0.200\sym{***}&    0.189\sym{***}&                  &    0.114\sym{***}&    0.072\sym{**} &                  &    0.060\sym{*}  \\
                &  (0.036)         &                  &  (0.037)         &  (0.038)         &                  &  (0.039)         &  (0.039)         &                  &  (0.037)         &  (0.031)         &                  &  (0.033)         \\
\addlinespace
Personal Grievances Index&                  &    0.176\sym{***}&    0.103\sym{***}&                  &    0.101\sym{***}&    0.055         &                  &    0.326\sym{***}&    0.300\sym{***}&                  &    0.053\sym{*}  &    0.036         \\
                &                  &  (0.035)         &  (0.036)         &                  &  (0.039)         &  (0.039)         &                  &  (0.036)         &  (0.036)         &                  &  (0.030)         &  (0.031)         \\
\midrule
Observations    &     1489         &     1489         &     1489         &     1498         &     1498         &     1498         &     1500         &     1500         &     1500         &      739         &      739         &      739         \\
Adjusted \(R^{2}\)&    0.056         &    0.016         &    0.060         &    0.022         &    0.005         &    0.023         &    0.020         &    0.066         &    0.073         &    0.005         &    0.003         &    0.006         \\
\end{tabular}
